H.264 Dimensions Limit?

[michaelc29830998]

Hello, I am trying to render/export a 18288 x 57 animation for a stadium fascia board but I can not get the size to go past 16384.

Is there a way to export this at the correct settings? Is it my computer that the problem?

I was shown a file that was an H264/mp4 with the correct settings so it can be done.

iMac Pro 2017

Radeon Pro Vega 56 8 GB

5120 x 2880 Display

Thanks for your help!

[Jeff Bugbee]

Are you certain this needs to be H.264? Usually boards that size get split into multiple smaller files. H264 is constrained by the Profile and Level options. Prores can export at that resolution no problem. Can they accept other formats?

[michaelc29830998]

Yes, but they are trying limit space, have uploads quicker and since the quality didnt seem to take a noticable hit they asked me to do this in H264. I could do 1/4 size but because of camera breaks and score displays that would cover up the animations it's easier just to do the full size. I am sending Pro Res files now.

Another vendor gave them an H264 at the correct size so it could be done. Just don't know how.

Thanks for the reply Jeff.

[Jeff Bugbee]

You might be able to open up that other file in an info program like Mediainfo and find out how they encoded it. I'm guessing they used ffmpeg since you can basically force it to use any resolution you specifiy. Or if you're allowed to post the file here, I can take a look. I'm pretty curious myself at this point.

[michaelc29830998]

Wow, ffmpeg is still around? Cool.

I will look into that and the medianinfo.

I don't feel comfortable posting the file but if I get anymore info I will post it for you.

Thanks again Jeff

Mike

[R Neil Haugen]

ffmpeg and ShutterEncoder are the two apps suggested "around here" for doing more granular things with H.264 settings. Both give users a ton more choices than Premiere or Resolve can give.

So some people make say a ProRes "master" output file, then take that into ffmpeg or ShutterEncoder and make their final deliverables there for H.264 deliverables.

Neil

[michaelc29830998]

Thanks for the reply Neil.

ffMPEG is out of my league (seems like it's line code now?) but I tried the Shutter encoder and can convert all files but the large ones.

I get this error

FFprobe: Unsupported codec with id 0 for input stream 1
FFmpeg: Conversion failed!

I am still waiting to hear back from the client on how the other vendor did the mp4.

I'll keep you updated.

thanks again

Mike

[Claire27646682ww8n]

Did you ever solve this? I have a stadium requesting a 28640x64 h.264. Usually we deliver Quicktimes or AVI for that size, or if we have to deliver h.264, we build a stacked export, but the spec sheet from the stadium specifically requests an h.264 at 28640x64.

[michaelc29830998]

Yes, you have render a pro res or animation file out of After Effects then take that rendered and convert it in Encoder at a high bit rate and that works fine. 
Hope that helps!

mike

[Claire27646682ww8n]

You got an h.264 out of Media Encoder wider than 16384? Because my 28640x64 animation file is stuck at 16384 when trying to convert to h.264 in ME, and I'm not seeing a way to get around it. Or did you have to find an encoder outside of Adobe to get that superwide h.264?

[michaelc29830998]

Sorry looking at my files they are pro res. I thought we had figured this out. I will see tomorrow if the arena figured it out or if they just accepted the pro res files eventually. 

[Claire27646682ww8n]

I'm suspecting my stadium will take ProRes and whoever put together the spec sheet just didn't know the difference. But I'll be interested to hear if you found a workaround. Thanks!